Saskatoon bushes (Amelanchier alnifolia) in bloom. We hope to plant some in the yard eventually if we can manage to find/make some room.
Golden Bean aka Buffalo Bean (Thermopsis rhombifolia). The flowers were used by some native peoples as a source of yellow dye to colour skin bags and arrows. The growth of the flower indicated the time of year when the buffalo were considered fat enough for hunting, hence the name "buffalo bean". The buffalo did not likely eat the flower, as all parts are toxic. 
 Wild Flowers of Edmonton and Central Alberta, France Royer & Richard Dickinson, 1996
I need to get the 'Calgary and South Alberta' edition, though many plants likely span both books.